Rotary shearing mechanism.



G. W.' SWIFT, JR. ROTARY SHEARING MEGHANISM. APPLICATION FILED JAN. 27, 1910. 1,034, 164, Patented July 30, 1912.

5 SHEETS-SHEET 1.

FIG. I

WITNESSES: INVENTOR:

Mair

G. W. SWIFT, Jn. ROTARY SHEARING MBGHANISM.

APPLICATION FILED JAN. 27, 1910. 1,034, 64, Patented July 30,1912.

s'snnxzTs-SHBET 2.

WITNEssEs; i INVENTOR;

GfoRGf W 57m/PTJ Z119/L G. W. SWIFT, TR. ROTARY SHEARING MEGHANISM.

APPLICATION FILED JAN. 27, 1910.

Patented July 30, 1912.

5 SHEETS-SHEET s.

-IN VE NTOR: Gfos' 14. SMI/Fr WITNESSES:

G. W. SWIFT, JR. ROTARY SHEARING MEGHNISM. APPLIOATION FILED JAN.27,191&

Patented July 30, 1912.

WITN ESSES INVENTOR G. W. SWIFT, JB.

ROTARY SHBARING MEGHANISM.

APPLIOATION FILED JAN. 27, 1910,

1,084,1 64. Patented July 30, 1912.

I 5 SHEETS-SHEET 5.

WITNESSES: INVENTOR:

j// GEORGE /44 Srv/f-"TJ/ Vmally loose upon said shaft and only n clutch.

y of Bordentown,` in the State of New Jersey,

UNITED sTATEs PATENT oFF/Ion.. I

. GEORGE WILLIAM SWIFT, JE., or BoRDENToWN, NEW JERSEY.

RTARY SHEARING MECHANISM.

T0 all fle/om it may concern Be it known that I, GEORGE IV. SWIFT, Jr.,

have invented a certain new and useful Improvement in Rotary Shearing Mechanism, whereof the following is a specification, ref-` erence being had to the accompanying drawings. l

My invention relates to means/for variably determining the length of sheets cut from a web of fabric and as hereinafter' dei scribed includes means for progressing a. web nof fabric-for instance paper-in combination with a pair of rotary shears vand adjustable means for varying the operation thereof in relation to the web feeding means. Said adjustable means includes a gear carrying a clutch member and arranged to be continuously rotatedupon one of the rotary shear shafts in definite invariable relation with the paper feeding mechanism but norclutched to turn it at intervals predeter-y mined by a'cam which is actuated bv a train of gears in changeable relation with the paper feeding mechanism; `the arrangement being such that said rotary shears are rendered inoperative after each shearing operation and remain inoperative unt-il rendered operative by said cam controlling said My invention includes the various novel features of construction and arrangementk hereinafter more definitely specified.

In the drawings Figure I is a side view of the discharge end of amachine for facing corrugated paper. showing 'a convenient embodiment of my invention applied thereto.' Fig. II is a fragmentary plan view. showing the changeable gear connecting the web feeding mechanism with the shearing mechanism. Fig. III is a right hand. side View of the shearing mechanism as shown in Fig. I. Fig. IV is a .fragmentary elevation of the left hand end of the shearing mechanism shown in Fig. III. Fig. V is a sectional view. taken on the line V, V in Fig. III. Fig. VI is a sectional view, taken on the line VI, VI in Fig.' III. Fig. VII is a view similar to Fig. III but showing only a portion of the right hand end thereof on a larger scale. Fig. VIII is a righthand end view ofthe mechanism shown in Fig. VII. Fig. IX is a plan viewfof the mechanism shown in Figs. VII and VII. Fig. X'

tl' m Specification of Letters Patent.

Patented uliy 30,' 191:2.

I Application led January 2'?, 1910. Serial No. 540,302.

f is a sectional view of said mechanism, taken on the line X, X in Figs. VIII and IX.

My invention includes the various novel features of construction and arrangement hereinafter more definitely specified. j

In said figures; the side frames 1 'support the web feeding mechanism including the rotary drums 2 and 3 having .the shafts 4 ando and carrying the belts 6 and 7 which are caused to grip the web 8 between their proximal runs, by the guide rollers 9 and 10, the latter being movable toward the former. Said paper feed-ing mechanism is arranged to be constantly operated by the main driving shaft 11 havingthe gear 12 engaging the gear 13von said drum 3; the latter having the gear 14 connected by the gears 15 and 16 with the gear 18 on the drum 2. Said'gears 15' and 16 are respectively engaged with the gears 2O and 2 1 carried by the guide rollers 9 and 10 so that said drums 2 and 3 and guiderollers 9 4and 10 are rotated at the same peripheral speed to continuously progress said belts 6 and 7 and the web of fabric 8 extending between them to the rotary shearing mechanism which is supported `by the standards 23 l on said frames 1. Said shearing mechanism includes the parallel shafts 25 and 26 which, as shown in Figs. III to VI inclusive, carry opposite blades 28 respectively connected with said shafts 25 and 26 by lever arms 29, adjustably clamped inrigid relation with their respective-shafts, by the bolts 30. As shown in Figs. III to VI inclusive, said arms 29 on the respective shafts 25 and 26 are rigidlyconnected with the bars 32 'by bolts 33; said bars being co-extenslve with said blades 28, and adjustably connected therewith by bolts 34, which draw the blades against the bars, and set screws 35 which thrust the blades away from said bars:

whereby said blades may be adjust-ably fieXed As shown in Fig. III, said rotary shear shaft 25 is provided with thegears 37 and 38,` which are rigidly connected therewith and respectively engaged with the gears 39 and 40 which are adjustable on sald ,shaft 26, so thatl the blades 28 may be turned in precisely predetermined relatio-n. 'Io this 'end the shaft 26 is provided with the disk 42 which is lstationary thereon but adjustably connected with said gear 39 by the bolts 43 which extend through the slots 44 into said gear. Said gear 39 is provided with the stud 45 which extends between the opposed set screws 46 carried by said disk 42 as shown in Fig. IV, and provided with jam nuts 47, the arrangement being `such that thel circumferential position of ysaid gear 39 on the shaftr26 may be precisely determined by the adjustment of said set screws 46 when said bolts 43 are loose, and, said gear may then be rigidly-clamped in adjusted position on said shaft 26, by said bolts 43. The gear 4Q shown "at the right hand side of- Fig. III, and in Fig. VI is adjustably connected with said shaft 26 by bolts 49 which extend through the slots 50 in l the disk 5l which isst-ationa-ry on'said shaft.

Said shaft 26 is also provided with the collar 52 encircled by the spring-brake 54 which is supported by the bracket 55 connected with the aforesaid standard 23; whereby said shafts 25 and 26 are prevented from turning accidentally. Said shafts 25 and 26 .are turned in predetermined definite relation to each other to effect the shearing operation, by positive rotation of said shaft 25 which is controlled as follows :fAs best shown in Fig. X, said shaft 25 is -reduced in diameter at the right hand end thereof,

shown in Figs. II and X, and provided with the end collar 57 which is stationary thereon. The gear 59 which is loose on said shaft 25 is arranged to be constantly driven by the gear 60. on the shaft 61, which is constantly driven by said gear 14 in definite relation with the paper feeding mechanism. Said sure of the pawl spring 73, as shown. Other-- gear 59 carries the circular clutch ratchet 70 in operative relation with the reciprocatory clutch pawl 71 carried by the collar 72 which is stationary on said shaft 25, and the arrangement is such that said shaft 25 is turned bythe gear 59 only when the latter is connected therewith Aby the engagement of` said pawl 7l in said ratchet 70 under preswise, said gear 59 is continuouslyv idly -rotated in definite relation with ythe paper feeding mechanism `vhile the shearing mechanism remains stationary; said clutch mechanism being automatically disengaged and the shearing mechanism left in stationary position vat the end of each shearing operation. Such disengagement'is effected by the cam slide74 which extends in the circumferential groove 75 in said collar72 and is there inclined as indicated by the dotted lines 76 i-n Fig. IX so as to enter the recess 78 in the pawl 7l and retract the latter clearof said` ratchet 70, whenever said collar 72 is turned to present said pawl recess 78 in registry with said cam slide 74 while the latter is upheld inV said collar groove 7 5 as in Fig. X. Said pawl 71 can only be released to engage the clutch 70 and thus effect the rotation of the shaft 25 by the gear 59, when said slide 74 is lowered from the position shown in Fig. X, to clear the recess 78 in said paw] 71, and, such movement of said cam slide 74 is automatically effected, at predetermined times, by the face cam 80 having the groove 81 Aengaging the roller 82 on said slide 74 as shown in Fig. VIII. Said cam 8() is constantly rotated in de nite but variable relation with the web feeding mechanism, being rigidly mounted on the shaft 84, which as shown in Fig. II has at its opposite end'the gear 85 engaging the gear86 on the shaft 87 extending between said shaft 84 and the shaft 5 ofthe drum 3 and having on its outer end thegear 89 which is operatively connected with said drum shaft 5 by gearing which is changeable to rotate said shaft 87, and consequently the cam 80, at different speeds while said shaft 5 is rotated at constant speed. As shown in Figs. I, II and III; the changeable gearing connecting said shaft 87 with the drum shaft 5, includes the gear 90 which engages the gear 89 on said shaft 87 and carries thepgear 91 engaging `the gear 92 on said shaft 5. Said gears 90.

and 91 are carried by the stud shaft 94 which is radially adjustable in the slot 95 of the bracket 96, beingprigidly connected with the lat-ter in adjusted position by the nut 97 at the inner end of said shaft 94. Said bracket 96 being hung on the shaft 87, which turns loosely therein, is rigidly secured in connection with the frame 1, by the bolt 100 which extends through the slot 101 in said'fram'e and is provided with the nut 102-shown in Fig. III on the inner side of said frame. stud shaft 94 may be adjusted bothradially toward and away from said shaft 87 and toward and away from said shaft 5, to support gears of different sizes in operative relation with the gear 92 which may also be of various sizes; so that said cam 8O may be rotated at any desired ratio with the rotation of said shaft 5 of the drum 3 of the web feeding mechanism, and thus effect the shearing of the web 8 to form sheets of different lengths.

The mechanism above described operates as follows The web 8 being progressed between the blades 28 at constant speed, by the belts 6 and 7 carried-by said drums 2 and 3, and, the gear 59 being rotated at constant speed in connection with said web feeding mechanism, as described, and, the clutch pawl 71 being engaged with the ratchet 7 0, as shown in Figs. IX and X; the shafts 25 and 26 are turned to bring the It is to be understood that said' so invention as defined in the appended claims.

74 which retracts said pawl 71 from the ratchet 70 when said pawl is vertically beneath the shaft 25. The shearing -mechanism being thus disengaged from said gear 59 is instantly stopped by the brake 54, while the gear 59 continues to rotate idly until said face cam 80 is turned bythe changeable gear mechanism aforesaid so as to lower said slide 74 by its roller 72 in the cam groove 8,1, and thus withdraw said slide 74 from engagement in the recess 78 of said pawl 71. l/Vhereupomthe spring 73 returns said pawl 71 into engagement with said ratchet 7 0 on the constantly rotating gear59 and rotation of said cam shafts 25 and 26 is resumed 'to effect' another. shearing operation as above described. s

l do not desire to limit myself to thel precise details of construction and arrangement herein set forth., as it is obvious that various modications may be made therein-without' departing from the essential features of V'my 1. The combination with web feeding mechanism; of two parallel rotary shear shafts; lever arms adjustable on said shafts; bars extending parallel with saidshafts and respectively rigidly connected with the arms on the respective shafts; shear blades car'- ried by said bars; bolts arranged Vto draw said blades toward said bars; set screws arranged to thrust Ysaid blades away from saidbars; gears operatively vconnecting said shafts; one of said gears having means arranged to circumferentially adjust it, including a disk lstationary 0n its shaft and having opposed set screws, and-a stud. projecting from said adjustable gear between said set screws; clutch mechanism whereby said shafts may be alternately rotated and released, including a gear mounted to turn loosely on oneof said shafts and having a face ratchet; a collar, stationary on that shaft, carrying a reciprocatory pawl arranged to engage said irat'chet; a spring` tending to thrust said pawl into' said ratchet; a cam slide supported independently of said clutch; means arranged to reciprocate said cam slide, including aface cam having a groove in which a roller on said .slide is engaged; and, means arranged to changeably rotate said face cam, including changeable gears connecting said web feedingmechanism with said face cam shaft. -2.' The combination lwith web feeding mechanism; o f two parallel rotary shearv shafts; bars extending parallel with said shaftsA and respectively rigidly connected therewith; shear 'bladesc'arried by said bars; boltsl arranged to dra-w said blades toward said bars; set screws arranged 43o thrust saidV blades away from said bars;

clutch mechanism whereby said shaftsmay be alternately rotated and released, including a ear mounted to turn loosely on one of sai shafts and carrying a ratchet; a pawl carried by said shaft, arranged to engage said ratchet; a lspring tending 'to thrust said pawl into lsaid ratchet; a cam supported independently of said clutch, arranged to automatically disengage the latter; and changeable gears connecting said web feeding mechanism with 'said cam.

3. The combination with vweb feeding .mechanism; of two parallel rotary shear shafts; bars extending parallel with said shafts' and Igespectively rigidly connected therewith; shear blades carried by said nectv said blades with said bars; gears operatively connecting said shafts; clutch mechanism whereby said shafts may be alternately rotated and released, including a gear mounted to turn loosely on one of said )shafts and carrying a ratchet; a pawl carried by said shaft arranged to engage said ratchet; a spring tending to thrust said pawl into said ratchet; a cam supported independently of said clutch, arranged to automatically disengage .the latter; vand feedingmechanism with saidx cam. U

4. The combination with web feeding mechanism; of two parallel rotary shear gears operativelyv connecting said shafts;

Abe alternately rotated and released, including a gear mounted to turn loosely upon one .of said shafts and carryinga ratchet; a paWPcar'ried by said shaft, arranged to e11-A maticallydisengage -said clutch, and, means mechanism with said cam. f

5. The' combination with web feeding mechanism; of two parallel rotary shear shafts; lever arms crcumferentia-lly adjustable on saidshafts; bars extendlng paridly connected with the arms on therespec- ,said bars; bolts arranged t-o draw vsaid respect to `the planes of said blades; set screws arranged to thrust said blades away from. said bars, transversely with respect to vthe planes of said blades; and. means coperatively connecting said shafts; whereby,

bars; means' arranged to adjustably conshafts; shear blades carried by said shafts;

clutch mechanism whereby said shafts may gage said ratchet; a cam arranged to auto-- operatively, connecting said web feeding allel with 'said shafts and respectively riggears operatively' connecting y said shafts;

means operatively connecting said webv tive shaftsgglexible shear blades carried by blades toward said bars, 'transversely with -12'5 said blades may be adjn'stably flexed trans- 130 verselywith respect to their planes and be maintained in rigid relation with said.bars.

6. The combination with web feeding lmechanism; of' two parallel rotary shear shafts; bars extending parallel with said shafts and A respectively rigidly connected therewith; flexible shear blades ,carried by said bars; bolts arrangedY to draw said blades toward said bars, transversely with respect to the planes of said blades; set screws arranged to thrust said blades away from said bars, transversely with respect to the planes of said blades; and, means coperatively connecting said shafts; whereby, A

In testimony whereof, I have hereunto' signed my name at Bordentown, New Jersey, this eleventh day of January 1910., l

GEORGE WILLIAM SWIFT, JR. Witnesses: R. H. AARoNsoN, J. A, BROWN. 

